CN213042984U

CN213042984U - Lithium battery pack with safety device

Info

Publication number: CN213042984U
Application number: CN202021195150.XU
Authority: CN
Inventors: 傅钊
Original assignee: Anhui Hama Lithium Technology Co Ltd
Current assignee: Anhui Hama Lithium Technology Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-23
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to a lithium battery pack with a safety device, which belongs to the technical field of lithium battery packs and comprises a shell, wherein a limiting plate is fixedly connected inside the shell, a battery pack is arranged inside the shell on one side of the limiting plate, a shell cover is clamped at the top end of the shell on the top end of the battery pack, a heat conduction frame is attached to the outer wall of the battery pack, a connecting plate at the front end of the heat conduction frame extends out of a heat dissipation hole, the heat dissipation hole is arranged on one side of the outer wall of the shell, a heat dissipation plate is welded after the connecting plate of the heat conduction frame extends out of the heat dissipation hole, the heat conduction frame is fixed on the inner wall of the shell on two sides of the limiting plate, a rubber bottom block is vulcanized at the bottom of the shell, when the shell falls downwards, the rubber bottom block is in contact with the ground, at the moment, an elastic ball is arranged in an inner hole of, the battery pack in the housing is prevented from being damaged by impact force.

Description

Lithium battery pack with safety device

Technical Field

The utility model belongs to the technical field of lithium cell group, especially, relate to a lithium cell group with safeties.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of scientific technology, lithium batteries have become the mainstream.

Patent number CN201821464557.0 discloses a lithium cell group with safeties, including battery installation shell and safeties, battery installation shell bottom inner wall has the vertical limiting plate of placing through the bolt fastening, and the height that highly is less than battery installation shell of limiting plate, battery installation shell bottom inner wall joint has lithium cell group, lithium cell group is located the limiting plate and the finite space that battery installation shell formed, lithium cell group includes columniform connecting terminal. The utility model discloses when the short circuit condition takes place for lithium cell group, air switch can break the circuit immediately and handle, and the damage condition can not appear in the inside lithium cell group that makes, perhaps when the circuit medium current is too big, breaks the circuit and handles, has increased the protective capacities of device, has improved the practicality of device, carries out shock attenuation processing to lithium cell group under the condition of taking place strong vibrations, carries out the heat dissipation to lithium cell group simultaneously and handles, has increased the protective capacities of device once more, has improved the life of device.

1. The heat-conducting plate is arranged in the sleeving shell of the existing lithium battery pack with the safety device, but the contact area between the heat-conducting plate and the battery pack is small, so that the internal heat dissipation efficiency of the battery pack is poor, and therefore the lithium battery pack with the safety device is provided.

2. The shell bottom that has current lithium cell group with safeties is provided with the spring, can play the cushioning effect with the help of the spring when the casing falls to the ground, but the spring can two-way effect when the atress, and then causes casing secondary vibration, causes lithium cell group in the casing to receive the striking damage easily, for this reason, we provide a lithium cell group with safeties.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a lithium battery pack with a safety device to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides a lithium cell group with safeties, includes the casing, the inside fixedly connected with limiting plate of casing, and the casing internally mounted of limiting plate one side has the group battery, the casing top block on group battery top has the cap, and the outer wall laminating of group battery has the heat conduction frame, the front end of heat conduction frame has even the board and stretches out the louvre, and the louvre is seted up in outer wall one side of casing, the even board of heat conduction frame stretches out welding heating panel behind the louvre, and the heat conduction frame is fixed in the shells inner wall department of limiting plate both sides, the bottom vulcanization of casing has the rubber bottom piece, and has seted up the hole in the rubber bottom piece, it has the bounce ball to fill in.

As a further optimization scheme of the utility model, the bottom arch of rubber bottom block has the bead.

As the utility model discloses a further optimization scheme, the bottom of cap is stretched out there is the cardboard, and the downward block of cardboard in the upper end lateral wall department of group battery.

As a further optimization scheme of the utility model, the bottom of group battery has linked up the silica gel piece, and silica gel piece solvent adhesion in the bottom inner wall department of casing.

As a further optimization scheme of the utility model, the welding has the connecting rod between the heat conduction frame, and the connecting rod is attached in the outer wall department of group battery.

The beneficial effects of the utility model reside in that:

1) the utility model discloses a shells inner wall in the limiting plate both sides sets up the heat conduction frame, and the even board of heat conduction frame stretches out the casing from the louvre and connects the heating panel after, when the casing at limiting plate rear is installed downwards to the group battery when inside, with cap and casing block, the heat conduction frame of laminating in the group battery outside this moment, when group battery work generates heat, great area of contact's heat conduction frame can give the heating panel outside heat dissipation with the heat transmission, for original less area of contact's group battery heat abstractor, area of contact has been promoted and has increased heat radiation structure's heat conduction area, the problem of the not high heat dissipation efficiency of lithium cell group that has now from taking safeties has been.

2) The utility model discloses a set up the rubber bottom piece bottom the casing, when the casing falls downwards, rubber bottom piece contact ground, there is the bounce ball pressurized deformation in the hole of rubber bottom piece this moment, along with the downthehole springing power of unloading including the bounce ball, the impact force that receives when buffering the casing falls, avoids the group battery in the casing to receive the impact force to damage, has solved the current not good problem of lithium cell group casing bottom damping device effect from taking safeties.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the rubber bottom block of the present invention;

in the figure: 1. a housing; 2. a limiting plate; 3. a battery pack; 4. a shell cover; 5. a heat conducting frame; 6. a connecting rod; 7. a silica gel sheet; 8. a heat dissipation plate; 9. heat dissipation holes; 10. a rubber bottom block; 11. an inner bore; 12. a resilient ball; 13. a rib; 14. and (4) clamping the board.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1-2, a lithium battery pack with a safety device, includes a housing 1, the inside fixedly connected with limiting plate 2 of

housing

1, and 1 internally mounted of the housing on one side of limiting plate 2 has a

battery pack

3, 1 top end block of the housing on the top end of battery pack 3 has a cap 4, and the outer wall of battery pack 3 has a heat conduction frame 5, the front end of heat conduction frame 5 has a connecting plate to stretch out heat dissipation holes 9, and heat dissipation holes 9 are opened on one side of the outer wall of housing 1, the connecting plate of heat conduction frame 5 stretches out heat dissipation holes 9 and then welds heat dissipation plate 8, and heat conduction frame 5 is fixed in the inner wall of housing 1 on both sides of limiting plate 2, the bottom of housing 1 is vulcanized with a rubber bottom block 10, and an inner hole 11 is opened in rubber bottom block 10, and elastic balls.

Illustratively, the inner walls of the shell 1 at the two sides of the limit plate 2 are provided with heat conducting frames 5, and the connecting plates of the heat conducting frames 5 extend out of the shell 1 from the heat dissipation holes 8 and then are connected with the heat dissipation plate 8, when the battery pack 3 is downwards installed in the shell 1 at the rear of the limit plate 2, the shell cover 4 is clamped with the shell 1, at the moment, the outer side of the battery pack 3 is jointed with the heat conducting frames 5, when the battery pack 3 works and generates heat, the heat conducting frames 5 with larger contact area can transmit the heat to the heat dissipation plate 8 to dissipate the heat outwards, compared with the original battery pack 3 heat dissipation device with smaller contact area, the contact area is increased, the heat conduction area of the heat dissipation structure is increased, the bottom of the shell 1 is provided with a rubber bottom block 10, when the shell 1 falls downwards, the rubber bottom block 10 is in contact with the ground, at the moment, elastic balls 12 in the inner holes 11 of the rubber bottom block, the battery pack 3 in the case 1 is prevented from being damaged by the impact force.

Referring to fig. 2, the rubber bottom block 10 is provided with a rib 13 protruding from the bottom end thereof.

The rib 13 forms an anti-slip prism at the bottom of the rubber bottom block 10, which improves the anti-slip capability of the bottom of the rubber bottom block 10.

Referring to fig. 1, a card board 14 extends from the bottom of the housing cover 4, and the card board 14 is downwardly engaged with the outer side wall of the upper end of the battery pack 3.

Illustratively, the card 14 at the bottom end of the cover 4 engages over the battery 3 to secure the battery 3 between the cover 4 and the housing 1.

Referring to fig. 1, the bottom of the battery pack 3 is connected with a silicon sheet 7, and the silicon sheet 7 is solvent-adhered to the inner wall of the bottom end of the casing 1.

Illustratively, the silicone sheet 7 holds the battery pack 3 at the inner wall of the bottom end of the case 1, and when the case 1 is impacted, the silicone sheet 7 can be buffered by the material property of the silicone sheet.

Referring to fig. 1, a connecting rod 6 is welded between the heat conducting frames 5, and the connecting rod 6 is attached to the outer wall of the battery pack 3.

Illustratively, the connecting rod 6 increases the contact area between the heat conducting frame 5 and the battery pack 3, and improves the heat conducting and dissipating capacity thereof.

The utility model relates to a sheet metal numerical control stamping device, through setting up the heat conduction frame 5 at the inner wall of the casing 1 of both sides of the limiting plate 2, and the even board of the heat conduction frame 5 stretches out the casing 1 from the louvre 8 and connects the heating panel 8, when the battery pack 3 is installed downwards in the casing 1 behind the limiting plate 2, the cap 4 is blocked with the casing 1, the outside of the battery pack 3 is laminated with the heat conduction frame 5 at this moment, when the battery pack 3 is heated up in operation, the heat conduction frame 5 with larger contact area can transmit the heat to the heating panel 8 for outward heat dissipation, compared with the battery pack 3 heat dissipation device with smaller contact area, the contact area is improved and the heat conduction area of the heat dissipation structure is increased, the rubber bottom block 10 is arranged at the bottom of the casing 1, when the casing 1 falls downwards, the rubber bottom block 10 contacts the ground, at this moment, the elastic ball 12 is pressed and deformed in the inner hole 11 of the rubber bottom block, the impact force received when the shell 1 falls is buffered, and the battery pack 3 in the shell 1 is prevented from being damaged by the impact force.

It should be noted that, the utility model relates to a lithium cell group with safeties, including casing 1, limiting plate 2, group battery 3, cap 4, heat conduction frame 5, connecting rod 6, silica gel piece 7, heating panel 8, louvre 9, rubber bottom block 10, hole 11, bounce ball 12, bead 13, cardboard 14, the part is general standard or the part that technical staff in the field knows, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The lithium battery pack with the safety device comprises a shell (1), and is characterized in that: the inside fixedly connected with limiting plate (2) of casing (1), and casing (1) internally mounted of limiting plate (2) one side has group battery (3), casing (1) top block on group battery (3) top has cap (4), and the outer wall laminating of group battery (3) has heat conduction frame (5), the front end of heat conduction frame (5) has even the board and stretches out louvre (9), and louvre (9) are seted up in outer wall one side of casing (1), the even board of heat conduction frame (5) stretches out louvre (9) back welding heating panel (8), and heat conduction frame (5) are fixed in casing (1) inner wall department of limiting plate (2) both sides, the bottom vulcanization of casing (1) has rubber bottom block (10), and has seted up hole (11) in rubber bottom block (10), it has elasticity ball (12) to fill in hole (11).

2. The lithium battery pack with a safety device as claimed in claim 1, wherein: the bottom end of the rubber bottom block (10) is provided with a convex rib (13) in a protruding way.

3. The lithium battery pack with a safety device as claimed in claim 1, wherein: the bottom of the shell cover (4) extends out of a clamping plate (14), and the clamping plate (14) is downwards clamped on the outer side wall of the upper end of the battery pack (3).

4. The lithium battery pack with a safety device as claimed in claim 1, wherein: the bottom of the battery pack (3) is connected with a silica gel sheet (7), and a solvent of the silica gel sheet (7) is adhered to the inner wall of the bottom end of the shell (1).

5. The lithium battery pack with a safety device as claimed in claim 1, wherein: connecting rods (6) are welded between the heat conducting frames (5), and the connecting rods (6) are attached to the outer wall of the battery pack (3).